NJ Ultra Festival

Trail Races of Half, Marathon, 50K, 50M, 100K and 100M

Weekend of March 27-28, 2021

Online Registration is Open

The Ultra Festival will take place at the

Princeton Blairstown Center in Hardwick NJ

158 Millbrook Rd, Hardwick, NJ 07825

Course: Approximately 5 mile loop (made up of a 2.6 mile and 2.4 mile section) to include fire roads, single track and ATV trails.

Ryan Thorpe crossing over the dam in 2016

Location: 158 Millbrook Rd, Hardwick, NJ 07825

Race Start times:

All races start on Saturday. Sunday 13.1M, 26.2M and 50K start at 8am

100 Mile - 9:00a

100 Kilometer - 9:15a

50 Mile - 9:30a

50 Kilometer - 9:45a

Marathon - 10:00a

Half Marathon - 10:15a

All races must be completed by Sunday at 3:00pm. You will need to leave on your last 5 mile loop by 12:00pm on Sunday.

Write up from the 2018 winner and current course record holder Philip Perkins.

Schedule of events:

Friday - Princeton Blairstown Center THIS IS NOT AN OPTION WITH COVID IN 2021

6:00pm - Princeton Blairstown Center is open only for runners who are staying over Friday.

You can pick your cabin, set up your bed and settle in. $45 a night payable to PBC.

We have access to cabin 8 & 9. The bath house will be open also.

Packet pickup is expected to be done Saturday morning between 7:30am and 9:30am.(depending on race start) SUNDAY RACES AT 7AM

Saturday - Princeton Blairstown Center

8:00am - Registration check in Opens

8:45am - Last minute pre race briefing by race directors

9:00am - Start of 100 Mile Race

9:15am - Start of 100 Kilometer Race

9:30am - Start of 50 Mile Race

9:45am - Start of 50 Kilometer Race

10:00am - Start of Marathon

10:15am - Start of Half Marathon

Sunday - Princeton Blairstown Center

12:00pm - Cutoff for leaving for your last loop. 100MILERS

3:00 pm - All races end.

Aid Stations:

Fully stocked at Race Head Quarters (RHQ - Princeton Blairston Camp) Aid Station. We will provide water and normal ultra fare. If there is anything that you absolutely want you should have it in your drop bag. We try to stock the aid stations with sweet, salt, fruit, and a mixture of snacks.

Drop Bags:

Are allowed at RHQ.


Pacers allowed ONLY after 50 miles. There is a place on your registration form to designate if you plan to use a pacer. You will need to pickup two PACER bibs at check in that your pacer must wear on their front and their back at all times while on the course. There is a $25 fee.

Crews: Allowed at RHQ.


Awards to top 3 male and female winners in ALL races. Buckles to all 100 mile finishers. Finishers Medals are given for ALL distances.


We offer 100% off a future race of similar or less value for the 1st place M/F.

We offer 75% off a future race of similar or less value for the 2nd place M/F.

We offer 50% off a future race of similar or less value for the 3nd place M/F.

Entry Fees:

Through Oct 31 Nov 1 - Jan 31 Feb 1 - Feb 28 March 1 - March 24

Half Marathon: $60 $70 $80 $100

Marathon: $70 $80 $90 $110

50 Kilometer: $80 $90 $100 $120

50 Mile: $100 $110 $120 $140

100 Kilometer: $110 $120 $130 $150

100 Mile: $140 $150 $160 $180

Refund Policy: A 50% refund will be available until January 30th.

No refunds after January 30th. No rollovers or transfers to next year.


Also included:

Each registered runner will receive SWAG to be decided on by the race organizers. We have given a weekender bag (2011), green fleece (2012), wind jacket (2013) , blue fleece (2014), green hoodie (2015) and orange jacket (2016), purple sweatshirt hoodie (2017), white jacket (2018), black fleece (2019) when you cross the finish line. This years order is going in 3/12, if you register after that date, it will be ordered for you after the race and mailed.

Refund Policy: A 50% refund will be available until January 30th. No refunds after February 6th. No rollovers or transfers to next year.


Average high temperature is 60 degrees F with an average low of 35 degrees F. Weather from weather.gov


Runners are allowed to park at Princeton Blairstown Center.


There are cabins at Princeton Blairstown Center that we have access to for the weekend. Each bed is $45/night. Each lodge has 12 bunks. You need to bring your own sheets / sleeping bag. There are showers and permanent restrooms located behind the cabin.

Other Rules:

We are guests at the Princeton Blairstown Center and it will be appreciated if you treat the property as if it were your own.

- Littering is strictly prohibited (this includes organic waste i.e. banana peels)

- Runners must be respectful of all volunteers and staff

Getting Here:

The closest airport Newark NJ (EWR) which is a one hour drive from Princeton Blairstown Center. You can use the address Princeton Blairstown Center, 158 Millbrook Rd, Hardwick, NJ 07825 to plug into any mapping software.

Princeton Blairstown Center is within easy driving distance of NJ State High Point Park (NJ State's highest point)

Previous Years Results:

Results 2019 - Princeton Blairstown Center

Results 2018 - Princeton Blairstown Center

Results 2017- Princeton Blairstown Center

2016 Results - Princeton Blairstown Center

RESULTS 2015 - Sussex County Fairgrounds

RESULTS 2014 - Sussex County Fairgrounds

RESULTS 2013 - Sussex County Fairgrounds

RESULTS 2012 - Sussex County Fairgrounds

RESULTS 2011 - Long Valley

2010 Results for the NJ100 (the only event held that year). Was run as a Fat Ass in year one.

Course: PHOTO ALBUM OF COURSE includes course map and elevation profile

Below are mail in registration forms.